2 Answers

MGI Photosuite Platinum is a product that has been aquired by Roxio Corporation and so the development has been ceased for a very long time. The operating systems that the software supported was only Microsoft Windows. Altough the old versions of the software may be available a solution to this is to run Parallels Desktop in MacOs software and emulate a Windows system and then install it into that virtual machine. Other solution to this matter doesn't exists at the moment.